The most accurate response regarding the impact of global trade on the Kingdom of Kongo and the Swahili coast during the seventeenth century is:
The Kingdom of Kongo lost control of the slave trade, while the Swahili coast lost its power to extract resources.
In the seventeenth century, the Kingdom of Kongo experienced significant disruptions due to the increasing influence of the Atlantic slave trade, which diminished its political and economic power. Initially, the kingdom had significant control over trade, particularly in ivory and slaves, but as European powers intensified their involvement in the slave trade, the Kongo lost much of its autonomy and control.
Conversely, the Swahili coast, which had historically been involved in trade with the Middle East and India, faced challenges as Portuguese influence grew. The establishment of Portuguese trading posts disrupted traditional trade patterns and led to a decline in the Swahili city's ability to extract resources effectively. The dominance of Portuguese trade ultimately weakened the economic power of the Swahili city-states.